<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>浮动与定位</title>
		<link href="css/new_file.css" rel="stylesheet"/>
	</head>
	<body>
		<!-- 快速创建类名为box的盒子：标签名为。box-->
		<div class="bigbox">
		<div class="box">box1</div>
		<div class="box"style="height:188px;">box2</div>
		<div class="box"style="height:230px;">box3</div>
		</div>
		<div class="box2">bpx4</div>
		
	</body>
</html>
